EP3696004A1 - Agencement d'affichage pour groupe d'instruments - Google Patents

Agencement d'affichage pour groupe d'instruments Download PDF

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Publication number
EP3696004A1
EP3696004A1 EP20158045.3A EP20158045A EP3696004A1 EP 3696004 A1 EP3696004 A1 EP 3696004A1 EP 20158045 A EP20158045 A EP 20158045A EP 3696004 A1 EP3696004 A1 EP 3696004A1
Authority
EP
European Patent Office
Prior art keywords
processing unit
backlight
layer
light intensity
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20158045.3A
Other languages
German (de)
English (en)
Other versions
EP3696004B1 (fr
Inventor
Hristo STOYANOV
Ahmed KARAIBRAHIMOV
Filipina Lozanova GROZDANOVA
Danail Branimirov SANDALSKI
Ivo Sevdalinov KOSTADINOV
Petar Bozhkov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Visteon Global Technologies Inc
Original Assignee
Visteon Global Technologies Inc
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Filing date
Publication date
Priority claimed from US16/789,683 external-priority patent/US20200264489A1/en
Application filed by Visteon Global Technologies Inc filed Critical Visteon Global Technologies Inc
Publication of EP3696004A1 publication Critical patent/EP3696004A1/fr
Application granted granted Critical
Publication of EP3696004B1 publication Critical patent/EP3696004B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/60—Instruments characterised by their location or relative disposition in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/213—Virtual instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/22—Display screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/1523—Matrix displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/27—Optical features of instruments using semi-transparent optical elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/343—Illumination of matrix displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/347—Optical elements for superposition of display information
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/349—Adjustment of brightness

Definitions

  • speedometers and fuel gauges may be two analog gauges in which an indicator, such as a needle or a pointer, is physically moved by a corresponding input between defined lower and upper range limits.
  • modern digital gauges include transducers or other sensors which output electrical signals to a microprocessor.
  • the electrical signals may be proportional to the measured value, e.g., a proportional voltage signal.
  • the microprocessor automatically adjusts a corresponding digital readout for display to the user, e.g., as a graphical icon, an image, and/or text.
  • the system includes a display system for a vehicle includes a display unit including a backlight and one or more layers cooperating with the backlight.
  • the one or more layers include a first layer including a first side for displaying content and an opposing second side cooperating with the backlight, a second layer adjustable between at least a light permeable state and a light impermeable state including a first side and an opposing side disposed proximate the first side of the first layer, and a third layer including a first side for displaying one or more primary indicators and an opposing second side disposed proximate the first side of the second layer.
  • a first processing unit is in communication with the one or more layers and the backlight of the display unit.
  • a second processing unit is in communication with the first processing unit.
  • the first processing unit renders the content displayed on the first layer and the one or more primary indicators displayed on the third layer in response to one or more output signals from the second processing unit.
  • the first processing unit detects the one or more output signals from the second processing unit representative of a dimming value of light intensity of the backlight and evaluates the dimming level value against a system threshold value of light intensity of the backlight.
  • the first processing unit generates one or more control signals to adjust light intensity of the backlight in response to the evaluation of the dimming level value against the system threshold value.
  • a non-transitory computer-readable medium with computer-readable instructions stored therein for adjusting light intensity of a display system of a vehicle includes a backlight, a first layer for displaying content and cooperating with the backlight, a second layer adjustable between at least a light permeable state and a light impermeable state disposed proximate the first layer, and a third layer for displaying one or more primary indicators disposed proximate the second layer.
  • Execution of the computer-readable instructions by a first processing unit and a second processing unit of a microcontroller causes the microcontroller to command the first processing unit to evaluate the one or more output signals from the second processing unit against a system threshold value of light intensity of the backlight and command the first processing unit to transmit one or more control signals to adjust light intensity of the backlight in response to the evaluation of the dimming level value against the system threshold value.
  • Execution of the computer-readable instructions by a first processing unit and a second processing unit of a microcontroller causes the microcontroller to command the first processing unit to transmit one or more control signals to adjust the second layer to one of the light permeable state and the light impermeable state to adjust light intensity of the content on the first layer projected through the second layer of the display unit in response to the evaluation of the dimming level value against the system threshold value.
  • a display system 10 is generally described.
  • the display system 10 is not shown or described as part of a specific application. It should be appreciated that the display system 10, or aspects thereof, may be utilized in many different applications, such as but not limited to a vehicular application, an entertainment application, and an advertising display application.
  • Exemplary vehicular applications include but are not limited to automobiles, airplanes, trains, boats, motorcycles, all-terrain vehicles (ATVs), utility type vehicles (UTVs), etc.
  • the display system 10 may be incorporated into an instrument cluster, a center console display, a passenger entertainment display, etc.
  • Exemplary entertainment applications include, but are not limited to, gaming systems, televisions, computer screens, etc. The teachings of this disclosure are not limited to the exemplary applications and environments noted above.
  • FIG. 1 shows an instrument cluster 12, in accordance with the one or more aspects of the display system 10, that may be used as part of a vehicle or other mobile or stationary system in certain aspects, such as but not limited to a motor vehicle, which may be positioned or disposed within a dashboard 14 or another interior component of the vehicle.
  • the instrument cluster 12 includes a display unit 16 having a display surface 18.
  • the display system 10 may be incorporated as part of the instrument cluster 12 or integrated into the instrument cluster 12.
  • the display system 10 may be implemented with a processor or non-transitory computer readable medium, installed or integrated in the vehicle.
  • the display system 10 may be stored in a secondary device, such as a persistent store associated with an electronic control unit (ECU) associated with the vehicle.
  • ECU electronice control unit
  • the instrument cluster 12 may include at least one display unit 16.
  • the instrument cluster 12 may include at least one of a digital display unit or a hybrid display unit, including a combination of at least one analog gauge and at least one digital display unit.
  • the instrument cluster 12 may also include one or more digital displays.
  • the display unit 16 may include a device that may generate and emit light, particularly for forming an image on or through a display surface 18.
  • the display unit 16 may include a device such as a Light Emitting Diode (LED) display, an Organic Light Emitting Diode (OLED) display, a Thin Film Transistor (TFT) display, a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP) or the like.
  • LED Light Emitting Diode
  • OLED Organic Light Emitting Diode
  • TFT Thin Film Transistor
  • LCD Liquid Crystal Display
  • PDP Plasma Display Panel
  • the system and method for adjusting the display of content on the display unit 16 of the display system 10 is shown schematically in Figure 2 .
  • a schematic view of an electronic system 20 connected to and cooperating with the display system 10 is shown in greater detail.
  • the electronic system 20 may include a bus or networking communications arrangement or bus 22 allowing communication between the display unit 16 and at least one microcontroller (MC), generally referenced by number 23.
  • MC microcontroller
  • the at least one microcontroller 23 includes application-suitable amounts of random-access memory, read-only memory, flash memory and other types of electrically-erasable programmable read-only memory, as well as accompanying hardware in the form of a high-speed clock or timer, analog-to-digital and digital-to-analog circuitry, and input/output circuitry and devices, as well as appropriate signal conditioning and buffer circuitry.
  • Computer-readable and executable instructions embodying the present method may be stored in memory (M) and executed as set forth herein.
  • the executable instructions may be a series of instructions employed to run applications on the at least one microcontroller 23 (either in the foreground or background), and allow either automated control of the vehicular subsystems, or direct control through engagement of an occupant of the vehicle in any of the provided HMI techniques.
  • the at least one microcontroller 23 includes a first microcontroller or first processing unit 24 and a second microcontroller or second processing unit 28 in electrical communication with the first processing unit 24.
  • the first processing unit 24 may be a graphical processing unit in communication with and configured to control the display unit 16.
  • the second processing unit 28 may be a processing unit in communication with one or more components of the system or vehicle.
  • Execution of the computer-readable instructions by the first processing unit 24 and the second processing unit 28 of the microcontroller 23 causes the microcontroller 23 to detect and receive one or more input signals, generally referenced as 25, from one or more components 26 of the system or vehicle with the second processing unit 28.
  • the one or more input signals 25 may be representative of measurements or values of the operating states of one or more components 26 of the vehicle, including, but not limited to, output from the vehicle speed sensor, output from the tire pressure monitoring system, output from a sensor measuring the ambient light level, in the vehicle and the like. The measurements and operating states of the vehicle are not limited by the examples disclosed herein.
  • the one or more input signals 25 may also include input signals received from the actuating device 15 or GUI interface as shown in Figure 1 .
  • the second processing unit 28 may generate and transmit one or more output signals 27 to the first processing unit 24.
  • the first processing unit 24 may evaluate the one or more output signals 27 from the second processing unit 28 against a system threshold value of light intensity of the backlight 38.
  • the first processing unit 24 may additionally generate and transmit one or more control signals 29 to a backlight 38 of the display unit 16.
  • the first processing unit 24, as will be described in greater detail below, may transmit one or more control signals 29 to the backlight 38 to adjust light intensity of the backlight 38 based upon a dimming level value.
  • the second processing unit 28 may generate and transmit one or more output signals 27 to the first processing unit 24, instructing the first processing unit 24 to render or show a graphic indication of a speedometer illustrating the vehicle speed on the display unit 16.
  • the second processing unit 28 may generate and transmit one or more output signals 27 to the first processing unit 24, instructing the first processing unit 24 to render or show a graphic indication of a tire pressure indicator or tell-tale on the display unit 16.
  • the display unit 16 may include one or more cooperating surfaces or layers for rendering or digitally displaying information and content.
  • the one or more layers may include at least a first layer 30, a second layer 40 and a third layer 50.
  • the third layer 50 may be disposed closest to the passenger compartment represented by components of the vehicle such as the steering wheel 11 shown in Figure 1 and may also function as the display surface 18 as shown in Figure 4 .
  • the second layer 40 may be positioned proximate to and behind or below the third layer 50 relative to the passenger compartment, while the first layer 30 is positioned proximate to and behind or below the second layer 40 relative to the passenger compartment.
  • the third layer 50 would be positioned proximate to an occupant of the passenger compartment of the vehicle who is looking head-on at the display unit 16, and similarly, the first layer 30 would be distal to the occupant.
  • Layers 30, 40, 50 may be optically bonded, connected or joined.
  • the first layer 30 of the display unit 16 may be configured as a digital presentation device, such as a TFT, OLED, OLEV, LCD, CRT technology driven device.
  • the first layer 30 may include a body 32 defining a first side 34 and an opposing second side 36.
  • the first side 34 may be configured to display digital representations of information and content, such as a group of virtual or reconfigurable instruments that display operational information of the vehicle.
  • the first side 34 of the first layer 30 may display content, including, but not limited to, a speedometer representing the speed of the vehicle as measured by the speed sensor (not shown) of the vehicle, a tachometer, a fuel level gauge and other vehicle operation information.
  • a backlight 38 cooperates with the first layer 30 to illuminate the rendered or digital representations of content, such as virtual instruments or information, generated on the first side 34 of the first layer 30, as shown in Figures 1 and 4 .
  • the backlight 38 may cooperate with the second side 36 of the first layer 30 to illuminate one or more layers 30, 40, 50 of the display unit 16.
  • the backlight 38 is adjustable between at least an off state and an on state. In one or more aspects, when the backlight 38 is placed in the off state, the backlight does not emit light, which corresponds to zero percent (0%) light transmittance or light intensity. When the backlight is placed in an on state, the backlight 38 emits light corresponding to a range of light transmittance or light intensity between greater than zero percent (0%) light transmittance or light intensity and one hundred percent (100%) light transmittance or light intensity.
  • the backlight 38 may be connected to and receive one or more control signals 29 from the first processing unit 24 as illustrated in Figure 2 to adjust light intensity of the backlight 38 based upon a dimming level value of light transmittance or light intensity of the backlight 38.
  • the dimming level value may be generated by the second processing unit 28 in response to the one or more input signals 25 and transmitted to the first processing unit 24 through the one or more output signals 27.
  • the dimming level value transmitted from the second processing unit 28 may be in a range defined by a lower level of about forty percent (40%) light transmittance or light intensity generated by the backlight 38 and an upper level of one hundred percent (100%) light transmittance or light intensity generated by the backlight 38. It is understood that the lower level and upper level of the range of light intensity generated by the backlight 38 may be adjusted to accommodate various vehicle, system, method or user settings or configurations.
  • the display unit 16 further includes a second layer 40 disposed proximate the first layer 30.
  • the second layer 40 includes a body 42 defining a first side 44 and an opposing second side 46.
  • the body 42 of the second layer 40 may be sized such that the second side 46 of the second layer 40 at least partially covers the first side 34 of the first layer 30.
  • the second layer 40 may be sized to the dimensions of the first side 34 of the first layer 30 to cover the first layer 30 with the second layer 40.
  • the second layer 40 may be configured to regulate the intensity of light transmitted from the backlight 38, through the first layer 30 and projected through the second layer 40.
  • the second layer 40 may be connected to and be in communication with the first processing unit 24 shown in Figure 2 such that, in response to receiving one or more control signals 29 from the first processing unit 24, the light permeability of the second layer 40 may be adjusted to effect the display of the rendering or digital representations of information and content generated on the first side 34 of the first layer 30 when the first layer 30 is viewed through the second layer 40 as illustrated in Figures 1 and 3 .
  • the second layer 40 may include a film or other treatment that is applied to one or more sides 44, 46 of the second layer 40.
  • the film may be an electric tinting film applied to and positioned on the first side 44 or the second side 46 of the body 42 of the second layer 40.
  • the electric tinting film is adjustable in response to one or more control signals 29 from the first processing unit 24 between a light permeable state, such as a transparent state or a translucent state, and a light impermeable state, such as an opaque state, to control dispersion or permeability of light therethrough.
  • a third layer 50 of the display unit 16 may be disposed proximate to the first side 44 of the second layer 40 and at least partially cover the second layer 40.
  • the third layer 50 may extend beyond the periphery defining the second layer 40. This may be due to an offset configuration. In the offset configuration, part of the third layer 50 may overlap with at least part of the second layer 40 and another part of the third layer 50 may extend beyond the periphery of the second layer 40.
  • the perimeter of the third layer 50 may be greater than the perimeter of the second layer 40.
  • the third 50 layer may be sized to the second layer 40.
  • the opacity, translucence or transparency of the second layer 40 may have no impact on content rendered on the third layer 50.
  • the third layer 50 is effectively displayed above or positioned on top of the second layer 40 relative to the passenger compartment of the vehicle, while the second layer 40 is positioned beneath the third layer 50 and positioned above the first layer 30 relative to the passenger compartment of the vehicle.
  • the third layer 50 includes a body 52 defining a first side 54 and an opposing second side 56 that may be disposed proximate to the first side 44 of the second layer 40.
  • the first side 54 of the third layer 50 may be configured to generate one or more primary indicators 60 that may be rendered or digital representations of content displayed on the third layer 50 based upon one or more control signals 29 received from the first processing unit 24 in response to one or more input signals 25 detected by the second processing unit 28.
  • the one or more primary indicators 60 are also referred to as tell-tales. Attributes of the tell-tales or indicators may be adjusted to represent the functional or operational state of the associated vehicle component or feature. Unlike traditional display systems, wherein tell-tales, indicators and warning lights were formed as a physical hardware piece, with an independent light source cooperating with an applique having an image applied thereon that is illuminated by the light source, the one or more primary indicators 60 are generated on the first side 54 of the third layer 50 as renderings or digital representations of information and content relating to operation of the vehicle.
  • tell-tales or indicators for vehicles are required by automobile operating and safety standards. Common areas may be provided on the instrument cluster to group the required tell-tales. The tell-tales must be located and illuminated on the vehicle instrument cluster to ensure accessibility, visibility and recognition in any operation mode by a user of the vehicle in both daylight and nighttime conditions. Exemplary tell-tales and indicators required by automobile operating and safety standards include, but are not limited to, airbag function status, anti-lock braking system status, braking system status, hand brake actuation status, check engine or engine functionality status, vehicle tire low pressure status, and front seat belt status.
  • the one or more primary indicators 60 are displayed in response to detection of a change in the operating parameters of one or more associated vehicle components 26 shown in Figure 2 .
  • a primary indicator 60 may be actuated in response to the detection of the inactivity or inoperability of a vehicle anti-lock braking system to notify the occupant of the vehicle that the braking system requires adjustment.
  • An input signal 25 generated by the anti-lock braking system vehicle component 26 is received and detected by the second processing unit 28.
  • the second processing unit 28 generates and transmits an output signal 27 to the first processing unit 24.
  • the first processing unit 24 generates and transmits one or more control signals 29 to generate the one or more primary indicators 60 on the third layer 50 of the display unit 16.
  • the color of the tell-tale or indicator may be associated with the status of a vehicle component, such as a red colored indicator representing an excessively hot temperature of an engine or an amber colored indicator representing an engine service notice.
  • the lighting of the tell-tale may be modified to identify the status of the vehicle component, such as an intermittently actuated or blinking light to indicate a warning status or a fully actuated light to indicate a vehicle component fault status.
  • the one or more primary indicators 60 provided on the third layer 50 of the display unit 16 are positioned in a central region 62 of the display surface 18 of the instrument cluster 12 adjacent a lower edge 64 of the instrument cluster 12, though it is understood that the location and grouping of the one or more indicators may be adjusted to accomplish the purposes of the display system 10.
  • the backlight 38 cooperates with the third layer 50 to illuminate the one or more primary indicators 60 when the one or more primary indicators 60 are rendered on the third layer 50 in response to control signals 29 transmitted by the first processing unit 24 shown in Figure 2 .
  • the one or more primary indicators 60 rendered or displayed on the third layer 50 are representative of at least one operating state of the one or more vehicle components 26.
  • One or more secondary indicators 66 or tell-tale content may also be displayed on the display unit 16.
  • the one or more secondary indicators 66 display notifications about the operating status of the vehicle or of secondary vehicle components.
  • the one or more secondary indicators 66 may display a rendering or digital representation of the activation or deactivation of one or more components 26 of a vehicle, including, but not limited to, activation of a cruise control feature, rear seat belt status, lane departure system status and notices, pedestrian detection system status, speed limiting system status and the like.
  • a secondary indicator 66 may be actuated in response to the detection of the activation or deactivation of a vehicle cruise control system to notify the occupant of the vehicle that the vehicle cruise control system is in use or not in use.
  • An input signal 25 generated by the vehicle cruise control system component 26 is received and detected by the second processing unit 28.
  • the second processing unit 28 generates and transmits an output signal 27 to the first processing unit 24.
  • the first processing unit 24 generates and transmits one or more control signals 29 to generate the secondary indicator 66 on the first layer 30 of the display unit 16 indicative of the vehicle component operating status.
  • the one or more secondary indicators 66 do not display vehicle functions or features that are regulated by automobile standards and thus do not require illumination and presentation in any vehicle operating condition. As illustrated in Figure 3 , the one or more secondary indicators 66 may be content rendered or digitally displayed on a portion 68 of the first side 34 of the first layer 30 in response to one or more control signals 29 from the first processing unit 24.
  • the relative transparency or opacity of the second layer 40 may be adjustable between at least a light permeable state, such as a transparent state or a translucent state, and a light impermeable state, such as an opaque state.
  • Figures 3 and 5A illustrates the second layer 40, of the display unit 16, in a light permeable transparent state.
  • the second layer 40 permits one hundred percent (100%) light transmittance or light intensity of the backlight 38 through the second layer 40.
  • the second layer 40 in the light permeable transparent state, allows content 48 rendered on the first side 34 of the first layer 30 in response to one or more control signals 29 from the first processing unit 24 that is illuminated by backlight 38 and projected from the first layer 30 to pass through the adjacent second layer 40 without restriction.
  • the light permeable transparent state of the second layer 40 allows display of content 48 rendered on the first layer 30, such as a virtual speedometer 61 and one or more secondary indicators 66 shown in Figure 5A , to be readily viewed by an occupant of the passenger compartment of the vehicle.
  • the one or more primary indicators 60 are rendered or digitally displayed on the third layer 50 of the display unit 16 by the first processing unit 24 in response to one or more control signals 29 from the first processing unit 24 based upon one or more output signals 27 from the second processing unit 28.
  • the one or more primary indicators 60 are illuminated by the backlight 38.
  • the primary indicators 60 rendered on the third layer 50 by the first processing unit 24 are viewable to the occupant of the passenger compartment of the vehicle in each of Figures 5A , 5B and 5C .
  • the instrument cluster 12 of the display system 10 is shown with the second layer 40 of the display unit 16 in a light permeable translucent state.
  • the light permeability of the second layer 40 may be adjusted in response to one or more control signals 29 from the first processing unit 24 such that the second layer 40 allows between greater than zero percent (0%) light transmittance or light intensity and less than one hundred percent (100%) light transmittance or light intensity through the second layer 40.
  • the light permeable translucent state allows less light permeability or reduces the light intensity displayed or projected from the first layer 30 through the second layer 40.
  • the second layer 40 in the light permeable translucent state, allows content 48 rendered or digitally displayed on the first side 34 of the first layer 30 in response to one or more control signals 29 from the first processing unit 24 to be illuminated by backlight 38 and projected from the first layer 30 through the adjacent second layer 40, at least in part.
  • the light permeable translucent state of the second layer 40 effects the contrast or light transmissive properties of the content 48, such as the virtual speedometer 61 and one or more secondary indicators 66 shown in Figure B, displayed on the first side 34 of the first layer 30 of the display unit 16.
  • the light transmittivity of the one or more primary indicators 60 rendered on the third layer 50 and illuminated by the backlight 38 is not affected by the change from the light permeable transparent state to the light permeable translucent state of the second layer 40.
  • the instrument cluster 12 is illustrated with a second layer 40 of the display unit 16 in the light impermeable opaque state.
  • the impermeability of the second layer 40 to light may be adjusted from a light permeable state to an light impermeable state in response to one or more control signals 29 from the first processing unit 24 such that the second layer 40 allows zero percent (0%) light transmittance or light intensity from the backlight 38 and first layer 30 through the second layer 40.
  • the light impermeable opaque state allows less light permeability or reduces the light intensity displayed or projected from the first layer 30 through the second layer 40.
  • the second layer 40 in the light impermeable opaque state, blocks content 48 rendered or digitally displayed on the first side 34 of the first layer 30.
  • content rendered on the first layer 30 and illuminated by backlight 38 is unable to project from the first layer 30 through the second layer 40. From a viewer's perspective, the rendered content 48 of the first layer 30 that is illuminated by the backlight 38 is not viewable.
  • an occupant of the passenger compartment of the vehicle may simply see a solid color, such as black, due to the light impermeable opaque state of the second layer 40, as opposed to the rendered or digitally displayed content 48 on the first layer 30.
  • the one or more primary indicators 60 rendered on the third layer 50 and any related analog dials 69 disposed above the third layer 50 are not affected by the change of the second layer 40 from the light permeable transparent or translucent state to the light impermeable opaque state.
  • the display unit 16 of the display system 10 may incorporate a brightness control system.
  • the brightness control system uses the efficiency of the backlight 38 to calculate and control the backlight 38 to a desired brightness or luminance for the display unit 16.
  • the efficiency of the backlight 38 may be a function of the operating temperature of the backlight 38.
  • the display unit 16 may include a temperature sensor (not shown) configured to monitor the temperature of one or more components of the display unit 16.
  • the temperature sensor may be in electrical communication with the at least one microcontroller to provide measurements indicative of the operating temperature of the display unit 16.
  • the first processing unit 24 may receive one or more signals indicative of a dimming level value and a temperature reading from the display unit 16.
  • the first processing unit 24 may execute logic to evaluate the temperature reading against a threshold value of light intensity of the backlight 38 or a stored look-up table of temperature readings.
  • the look-up table may be populated with voltage/backlight intensity levels to apply to the backlight 38, corresponding to temperature readings from the temperature sensor.
  • the first processing unit 24 may transmit one or more control signals 29 to the backlight 38 based upon an evaluation of the dimming level value and the threshold value based upon the look-up table of temperature readings.
  • the first processing unit 24 may transmit one or more control signals 29 representing a light transmittance or light intensity percentage value to the backlight 38 to set the dimming level value for the display unit 16.
  • One or more input signals 25, generally represented by block 72, are received, detected and evaluated by the second processing unit 28.
  • the one or more input signals 25 from one or more vehicle components 26 received and detected by the second processing unit 28 may represent the detection or measurement of a change in value or operating status of a primary or secondary vehicle system or component 26.
  • the one or more input signals 25 received and detected by the second processing unit 28 may represent measurement of a dimming level value request for the backlight 38 of the instrument cluster 12.
  • the input signal 25 received by the second processing unit 28 may be based upon output from a sensor, such as a photocell employing a photodiode or photoresistor. The sensor may measure the ambient light level in the vehicle, based upon brightness, luminescence or the like.
  • the input signal 25 may be based upon input received from the actuating device 15 or GUI interface shown in Figure 1 correlating to a user requesting a light permeability or dimming level for the display unit 16.
  • the second processing unit 28 In response to the one or more input signals 25, at block 74, the second processing unit 28 generates and transmits one or more output signals 27 received by the first processing unit 24 representative of the requested light intensity of the backlight 38 as a dimming value.
  • the one or more output signals 27 may be representative of a dimming value of light intensity of the backlight 38 based on the one or more input signals from the one or more vehicle components 26.
  • the dimming level value transmitted from the first processing unit 24 to the backlight 38 may be in a range with a lower level about forty percent (40%) light transmittance or light intensity of the backlight 38 and an upper level of one hundred percent (100%) light transmittance or light intensity of the backlight 38.
  • the lower level and upper level of the range of light intensity of the backlight 38 may be adjusted to accommodate various vehicle, system, method or user settings or configurations.
  • the light transmittance or light intensity of the rendered or digitally displayed content 48 such as the virtual instruments and one or more secondary indicators 66 generated and displayed on the first layer 30, and the one or more primary indicators 60 displayed on the third layer 50, may be projected at no less than about forty percent (40%) light transmittance or light intensity.
  • the first processing unit 24 transmits one or more control signals to the backlight 38 to set the backlight light intensity to the dimming level value, i.e., a value of sixty percent (60%) light transmittance or light intensity of the backlight 38.
  • the backlight 38 will project light through the first layer 30 to illuminate content 48, such as virtual instruments and one or more secondary indicators 66, rendered or digitally displayed on the first surface of the first layer 30 by the first processing unit 24, at the dimming level value of sixty percent (60%) light transmittance or light intensity. Additionally, the backlight 38 will illuminate one or more primary indicators 60 rendered or digitally displayed on the third layer 50 at the dimming level value of sixty percent (60%) light transmittance or light intensity of the backlight 38.
  • the first processing unit 24 generates and transmits one or more control signals 29 to set the backlight light intensity to the threshold value, i.e., a value of about forty percent (40%) light transmittance or light intensity of the backlight 38.
  • the backlight 38 will illuminate the first set of indicators 60 on the third layer 50 and virtual instruments and one or more secondary indicators 66 on the first layer 30 of the display unit 16 at the threshold value of about forty percent (40%) light transmittance or light intensity of the backlight 38.
  • the second processing unit 28 In response to the one or more input signals 25, the second processing unit 28, at block 76, generates and transmits one or more output signals 27 to the first processing unit 24 with values representative of the requested display functions for the instrument cluster 12.
  • the second processing unit 28 may transmit one or more output signals 27 to the first processing unit 24 indicative of the change in status of a primary or secondary vehicle system or component 26 in response to an input signal 25 received from one or more vehicle components 26.
  • the first processing unit 24, in response to the output signal 27, may generate one or more control signals 29 to render or digitally display one or more display features or indicators on one or more of the first layer 30 and third layer 50 of the display unit 16.
  • the second processing unit 28 may transmit one or more output signals 27 to the first processing unit 24 with a value representative of a dimming level for content displayed on the instrument cluster 12.
  • the dimming level value of the display unit 16 may range between zero percent (0%) light transmittance or light intensity, wherein content is not viewable on the first layer 30 of the display unit 16, and one hundred percent (100%) light transmittance or light intensity.
  • the first processing unit 24 executes logic, at block 78, to evaluate the dimming level value received from the second processing unit 28 against a system threshold value.
  • the system threshold value may be a stored value representing a desired level of light transmittance or light intensity of the backlight 38. As one example, this may be a percentage of a maximum illumination value of the backlight 38.
  • the stored system threshold value for dimming of the backlight and the display unit may be about forty percent (40%) light transmittance or light intensity of the backlight 38.
  • the system threshold value may be obtained from a stored look-up table of backlight light transmittance values. The look-up table may be populated with voltage levels to apply to the backlight 38, corresponding to light intensity ranges.
  • the first processing unit 24, at block 80 transmits one or more control signals 29 to adjust the second layer 40 to a light permeable transparent state.
  • the dimming level value received by the second processing unit 28 is about sixty percent (60%) light transmittance or light intensity of the backlight 38 and the backlight dimming value lower range limit is about forty percent (40%) light transmittance or light intensity of the backlight 38
  • the second layer 40 in response to receiving the control signal, allows one hundred percent (100%) light transmittance or light intensity through the second layer, thereby allowing content displayed on the first side of the first layer 30 to be projected through the adjacent second layer 40 without restriction, as illustrated in Figure 5A .
  • the first processing unit 24 may transmit one or more control signals 29, at block 82, to adjust the light permeability or light impermeability of the second layer 40 to a value between zero percent (0%) light transmittance and less than one hundred percent (100%) light transmittance through the second layer 40.
  • the dimming level value transmitted by the second processing unit 28 is about twenty percent (20%) light transmittance or light intensity of the backlight 38 and the backlight dimming value lower range limit is about forty percent (40%) light transmittance or light intensity of the backlight 38
  • the first processing unit 24 may transmit one or more control signals 29 to place the second layer 40 to a light permeable translucent state.
  • the second layer 40 in response to receiving a control signal 29 from the first processing unit 24, adjusts the translucence of the second layer to about fifty percent (50%) light transmittance.
  • setting the second layer 40 to about fifty percent (50%) light transmittance or light intensity will result in halving the light intensity associated with the backlight 38, for the content 48 rendered or displayed on the first layer 30.
  • the virtual instruments and one or more secondary indicators 66 on the first layer 30 will appear to be dimmed to the desired dimming level value of twenty percent (20%) light transmittance or light intensity, even though the backlight 38 may be emitting light at a higher value, such as the threshold value of about forty percent (40%) light transmittance or light intensity. While the content 48 may be dimmed down to the desired dimmed level value of twenty percent (20%) light transmittance or light intensity, the content of the third layer 50 may still appear, from the viewer's perspective, to be displayed with a light intensity at the threshold value, i.e., about forty percent (40%) light transmittance or light intensity. As such, the one or more primary indicators 60 on the third layer 50 may be rendered or displayed on the instrument cluster 12 at a different illumination level than the content 48 rendered or displayed on the first layer 30.
  • the first processing unit 24, at block 82 may transmit one or more control signals 29 to adjust the opacity of the second layer 40 to a light impermeable opaque state such that the second layer 40 is impermeable to light. This results in the second layer 40 being zero percent (0%) light transmittance or light intensity. If the second layer 40 is in a light impermeable opaque state, content 48 displayed on the first side 34 of the first layer 30, such as the virtual instruments and one or more secondary indicators 66, is not viewable through the second layer 40, from the viewer's perspective, as is shown in Figure 5C .
  • the first processing unit 24 may transmit one or more control signals 29 to the backlight 38 to adjust the light transmittance or light intensity of the backlight 38 to a threshold value from the look-up table. This may result in content 48 on the first layer 30 to appear dim relative to the light permeable transparent state, from the viewer's perspective. The resulting dimming level value will assist in cooling the operating temperature of the display unit 16 of the display system 10.
  • content such as the one or more primary indicators 60 on the third layer 50 may be at most dimmed down to a threshold value.
  • Content 48 on the first layer 30, such as the virtual instruments and the one or more secondary indicators 66, may be dimmed below the threshold value, such that the content of the first layer 30 is not viewable by the viewer. Differential dimming may be useful when dealing with hierarchical content.
  • regulations may dictate that certain content needs to be visible to a viewer or occupant of a vehicle, such as a driver.
  • certain mission critical content may have a higher priority than other content.
  • other content may be up to the viewer or occupant's discretion regarding visibility. Through differential dimming, the viewer or occupant could dim completely down discretionary content, while still being able to see regulated content and/or mission critical content.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Instrument Panels (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
EP20158045.3A 2019-02-18 2020-02-18 Agencement d' affichage pour un combiné d' instruments Active EP3696004B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962807057P 2019-02-18 2019-02-18
US16/789,683 US20200264489A1 (en) 2019-02-14 2020-02-13 Electronic mirror with automatic luminance and automatic dimming control system

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Publication Number Publication Date
EP3696004A1 true EP3696004A1 (fr) 2020-08-19
EP3696004B1 EP3696004B1 (fr) 2023-08-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3141103A1 (fr) * 2022-10-25 2024-04-26 Psa Automobiles Sa Dispositif d’affichage pour véhicule automobile
WO2024223359A1 (fr) * 2023-04-27 2024-10-31 Continental Automotive Technologies GmbH Unité de rétroéclairage, appareil d'affichage de véhicule et procédé de commande de ces derniers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6388388B1 (en) 2000-12-27 2002-05-14 Visteon Global Technologies, Inc. Brightness control system and method for a backlight display device using backlight efficiency
US20180065483A1 (en) * 2016-09-06 2018-03-08 Pure Depth Limited Multi-layer display for vehicle dash
DE102017212912A1 (de) * 2017-07-27 2019-01-31 Audi Ag Anzeigevorrichtung für ein Kraftfahrzeug, Verfahren zum Betreiben einer Anzeigevorrichtung, Steuereinrichtung, und Kraftfahrzeug

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6388388B1 (en) 2000-12-27 2002-05-14 Visteon Global Technologies, Inc. Brightness control system and method for a backlight display device using backlight efficiency
US20180065483A1 (en) * 2016-09-06 2018-03-08 Pure Depth Limited Multi-layer display for vehicle dash
DE102017212912A1 (de) * 2017-07-27 2019-01-31 Audi Ag Anzeigevorrichtung für ein Kraftfahrzeug, Verfahren zum Betreiben einer Anzeigevorrichtung, Steuereinrichtung, und Kraftfahrzeug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3141103A1 (fr) * 2022-10-25 2024-04-26 Psa Automobiles Sa Dispositif d’affichage pour véhicule automobile
WO2024223359A1 (fr) * 2023-04-27 2024-10-31 Continental Automotive Technologies GmbH Unité de rétroéclairage, appareil d'affichage de véhicule et procédé de commande de ces derniers

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